At the outer reaches of the world, a team of scientists discover a new highly intelligent species.
Clarke, Bellamy, Octavia, and Jasper hit a tragic roadblock. Meanwhile, Raven and Monty make an important discovery.
Clarke and Roan must work together in hostile territory in order to deliver an invaluable asset to Abby and her team.
Octavia fights in the final battle for her people’s survival, but not everyone is willing to play fair.
At the outer reaches of the world, a team of scientists discover a new highly intelligent species, but its existence may endanger more than their research. Joel McHale, Nadia Hilker, Michelle Ang, Tim Armstrong, and Brandon Jay McLaren guest star.
